| Li/2009/Taiwan | 10 | Prospective | RP | Antero-lateral Palatoplasty | 6 | Fair |
| Li/2013/Taiwan | 47 | Prospective | RP | Antero-lateral Palatoplasty | 6 | Good |
| Li/2015/Taiwan | 32 | Prospective | RP | Antero-lateral Palatoplasty | 6 | Good |
| Li/2016/Taiwan | 60 | Retrospective | RP | Antero-lateral Palatoplasty | 6 | Good |
| Li/2018/Taiwan | 25 | Retrospective | SP | Lateral Palatoplasty | 6 | Good |
| Liu/2013/China | 51 | Retrospective | H-UPPP/ Z-PPP | Classic Palatoplasty | 9 | Good |
| Lunkvist/2008/Sweden | 120 | Prospective | UPPP | Classic Palatoplasty | 12 | Fair |
| Mantovani/2012/Italy | 4 | Prospective | VUPL | Lateral Palatoplasty | 6 | Fair |
| Mantovani/2015/Italy | 32 | Prospective | BRB | Lateral Palatoplasty | 12 | Good |
| Mantovani/2017/Italy | 19 | Prospective | Alianza | Lateral Palatoplasty | 6 | Good |
| Marzetti/2013/Italy | 15 | Prospective | AP | Anterior Palatoplasty | 2 | Good |
| Marzetti/2013/Italy | 19 | Prospective | UPF | Anterior Palatoplasty | 2 | Good |
| Montevecchi/2017/Italy | 111 | Prospective | BRP | Lateral Palatoplasty | 6 | Good |
| Neruntarat/2011/Thailand | 83 | Prospective | UPF | Anterior Palatoplasty | 55 | Fair |
| Pang/2009/Multi-center | 77 | Prospective | AP | Anterior Palatoplasty | 33 | Fair |
| Pang/2016/Multi-center | 73 | Prospective | AP + ESP | Antero-lateral Palatoplasty | 6 | Good |
| Pianta/2017/Italy | 17 | Retrospective | BESP | Lateral Palatoplasty | 6 | Good |
| Piccin/2013/Italy | 85 | Prospective | FEP | Lateral Palatoplasty | 6 | Good |
| Plaza/2019/Multi-center | 75 | Prospective | ESP | Lateral Palatoplasty | 12 | Good |
| Rashwan/2017/Italy | 25 | Prospective | UPPP | Classic Palatoplasty | 6 | Good |
| Rashwan/2017/Italy | 25 | Prospective | ESP | Lateral Palatoplasty | 6 | Good |
| Rashwan/2017/Italy | 25 | Prospective | BRP | Lateral Palatoplasty | 6 | Good |
| Salamanca/2014/Italy | 24 | Prospective | BAP | Lateral Palatoplasty | 6 | Good |
| Soares/2013/ Brazil | 18 | Prospective | LP | Lateral Palatoplasty | 6 | Good |
| Sommer/2016/Germany | 23 | Prospective | UPPP | Classic Palatoplasty | 3 | Good |
| Suslu/2017/Turkey | 28 | Retrospective | ESP | Lateral Palatoplasty | 6 | Good |
| Ugur/2013/Turkey | 42 | Prospective | AP | Anterior Palatoplasty | 24 | Good |
| Vicini/2015/Italy | 10 | Prospective | BRP | Lateral Palatoplasty | 6 | Good |
| Wu/2016/China | 24 | Prospective | UPPP | Classic Palatoplasty | 6 | Good |
| Yi/2009/China | 34 | Prospective | ZPPP | Classic Palatoplasty | 6 | Fair |
| Yousuf/2013/India | 22 | Prospective Cohort | UPPP | Classic Palatoplasty | 6 | Good |